The Order Inquiry API has a query that retreives details on a specific Item Not Received (INR) or Order Inquiry that the authenticated user initiated as a buyer. Buyers initiate INR inquiries against orders if the order has not arrived within the expected delivery window. The seller then has to address the INR inquiry and update the buyer through a message and/or by providing shipment tracking information. An INR inquiry can be escalated to eBay customer support if the seller does not address the buyers inquiry.